16445286 has 48 divisors (see below), whose sum is σ = 41867280. Its totient is φ = 4599360.

The previous prime is 16445251. The next prime is 16445309. The reversal of 16445286 is 68254461.

16445286 is a `hidden beast` number, since 1 + 644 + 5 + 2 + 8 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 16445286.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 621 + ... + 5768.

It is an arithmetic number, because the mean of its divisors is an integer number (872235).

Almost surely, 2^16445286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16445286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20933640).

16445286 is an abundant number, since it is smaller than the sum of its proper divisors (25421994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16445286 is a wasteful number, since it uses less digits than its factorization.

16445286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6421 (or 6418 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 16445286 is about 4055.2787820321. The cubic root of 16445286 is about 254.3004587130.

The spelling of 16445286 in words is "sixteen million, four hundred forty-five thousand, two hundred eighty-six".